TI mmWave Radar: understanding Relative Power (dB) using RangeProfile

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Khan
Khan 2025-9-3
回答： Shantanu 2025-9-8
Using a TI IWR6843ISK evaluation board, I would like to understand the returned power from the RangeProfile field of the measurements object. For example:
xdat = meas.RangeGrid;
ydat = meas.RangeProfile;
plot(xdat,ydat);
will return a plot with Relative-power (dB) vs. Range (m) similar to 10-29 in Radar Toolbox User's Guide. This is not an absolute power (dBm), so what is this power measurment relative to? Is this explained in documentation someplace?
Thanks for any help.
Khan

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Shantanu
Shantanu 2025-9-8
Hi Khan,
When using a TI mmWave radar like the IWR6843ISK with MATLAB, the RangeProfile field provides a measure of the radar reflection strength at different distances. The y-axis of this plot, labeled "Relative-power (dB)".
For a practical example of how to read and plot this data, you can refer to the given documentation. The "Read and Plot Position and Range Profile" section is particularly relevant.
https://www.mathworks.com/help/radar/ug/getting-started-timmwaveradar-example.html#GettingStartedTexasInstrumentsMmWaveRadarSensorsExample-11
Hope this helps.

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